1,720,986 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Italian scientific production in dentistry: comparative bibliometric analysis of the last 3 decades
No full textOBJECTIVES In the last decades, Italian scientific production has grown in several areas of medical sciences, includ-ing dentistry. Understanding the trends and patterns of scientific production in dentistry can provide insights into the research interests and priorities of Italian researchers, as well as identify potential future research areas. Therefore, a large bibliometric analysis was conducted by analyz-ing all the articles published in the last 30 years in dental journals in-dexed in Scopus that had at least one author with Italian affiliation. We carried out a comparative anal-ysis by decade to study the trend of bibliometric parameters over time. MATERIALS AND METHODS In January 2023, all articles pub-lished from 1993 to 2022 in jour-nals indexed in the “Dentistry” category of Scopus with at least one author affiliated with any Ital-ian institution were searched. For each decade, the most active au-thors and affiliations, the most contributing journals, and the most cited articles were identified. Maps were created to represent the keyword co-occurrence net-work and the co-authorship net-work by country. Finally, the main topic, study type, and percentage of studies with foreign co-authors of the 1000 most cited articles in each decade were analyzed. RESULTS AND CONCLUSIONS Italian scientific production has in-creased progressively over time with an average growth rate of +10.2%; 1478 documents were published from 1993 to 2002 (first decade), 5968 documents from 2003 to 2012 (second decade) and 8859 documents from 2013 to 2022 (third decade). The year with the highest number of articles published was 2020 (n = 1038). Adriano Piattelli was the most pro-lific author in the first and second decades, while Giovanni Lodi was the first for the documents pub-lished during the third decade. The Università degli Studi di Milano was the most productive affiliation. The analysis of the authors’ key-words revealed a change in re-search interests over time. In the analysis of the 1000 most cited articles of each decade, a variation in the disciplines addressed and the type of study was ob-served. In general, the most fre-quent topics were “implantology”, “periodontology” and “oral pathol-ogy”, while the most frequent study type was “observational study”. The analysis of international col-laboration highlighted that the percentage of articles with at least one foreign author has increased over time, from 28% in the first decade, to 43% in the second one and 49% in the third one. CLINICAL SIGNIFICANCE Bibliometric analyses in academia have gained increasing impor-tance due to the need for objec-tive quantification of scientific out-put. This bibliometric study allows to highlight the contribution of Ita-ly to dental world research, to identify the most influential national authors or institutions, and the trends in interest in the differ-ent topics
Efficacia clinica della vaccinazione in una popolazione di soggetti anziani durante l’inverno 1999-2000
No full textEfficacia clinica della vaccinazione influenzale in una popolazione di soggetti Anziani durante l’inverno 1999/2000
No full textDispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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